Snap-through buckling of a shallow arch resting on a two-parameter elastic foundation |
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Authors: | Adel Abdelgawad Ahmed Anwar Mohamed Nassar |
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Affiliation: | Mathematics and Physics Engineering Department, Faculty of Engineering, Cairo University, Giza, Egypt |
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Abstract: | In this paper, we study the static and dynamic snap-through of a shallow arch resting on a two-parameter elastic foundation under a point load moving at a constant speed. The deformation of the arch is expressed in Fourier series. We extend the previous works when the arch resting on a certain model of two-parameter elastic foundation. Each model of foundation has a different definition for the second foundation parameter, where the model is discussed in this paper is Pasternak model. For quasi-static analysis, it is noted that the first four modes in the expansion are sufficient to predict the response of the arch. Similarly, when the point load moves with a significant speed, we integrate the equation of motion numerically using the first modes in the expansion. |
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Keywords: | Two-parameter foundation Shallow arch Moving point load Snap-through buckling |
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